a buf a buf a buf
a buf a buf a buf !
ä WORD_BOUNDARY b u f WORD_BOUNDARY ä WORD_BOUNDARY b u f WORD_BOUNDARY ä WORD_BOUNDARY b u f WORD_BOUNDARY
a WORD_BOUNDARY b u f WORD_BOUNDARY a WORD_BOUNDARY b u f WORD_BOUNDARY a WORD_BOUNDARY b u f WORD_BOUNDARY ! WORD_BOUNDARY